SF5401-TAP Equivalent & Substitute Parts

Part Overview

The SF5401-TAP is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This through-hole component operates at 100 V DC reverse voltage with 3 A average rectified current and features fast recovery characteristics with a 50 ns reverse recovery time. The device is housed in an SOD-64 axial package and is classified as Active product status with full ROHS3 compliance.

Substitute parts are necessary when the SF5401-TAP becomes unavailable from inventory, reaches end-of-life status, or when alternative packaging formats are required for specific assembly processes. The substitute components listed maintain electrical compatibility within the 100 V / 3 A rectifier category while accommodating different manufacturers, package styles, and recovery speed classifications.

Key Parameters

Parameter	SF5401-TAP Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.1 @ 1	V @ A
Speed Classification	Fast Recovery ≤ 500ns	-
Reverse Recovery Time (trr)	50	ns
Current - Reverse Leakage @ Vr	5	µA @ 100 V
Mounting Type	Through Hole	-
Package / Case	SOD-64, Axial	-
Operating Temperature - Junction	-55 to 175	°C
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution logic for the SF5401-TAP is determined by the following critical parameters:

Voltage Rating: All substitute parts must maintain 100 V DC reverse voltage maximum to ensure circuit protection and reliability.

Current Rating: The SF5401-TAP carries 3 A average rectified current. Substitute parts are grouped into two categories: (1) Full 3 A current rating for direct replacement, and (2) Lower current ratings (1 A) for applications where reduced current capacity is acceptable.

Recovery Speed: The SF5401-TAP is classified as fast recovery (≤ 500 ns). Substitute parts include both fast recovery devices (matching the original specification) and standard recovery devices (> 500 ns), which differ in switching characteristics and reverse recovery time.

Package Type: The original SOD-64 axial package is compared against DO-41, DO-204AL, and DO-201AD packages. All are through-hole axial configurations suitable for PCB insertion.

Thermal Range: Operating temperature range varies from -55°C to 175°C across the product family. Substitutes with narrower ranges remain compatible for most applications.

Compliance: All listed parts maintain ROHS3 compliance and REACH unaffected status, matching the original part's regulatory requirements.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) V	Io (A)	Vf (Max) @ If	Speed	trr (ns)	Package	Temp Range °C	Status
SF5401-TAP	Vishay	100	3	1.1 @ 1A	Fast Recovery ≤ 500ns	50	SOD-64	-55 to 175	Active
1N5401G	Good-Ark Semiconductor	100	3	1.1 @ 3A	Standard Recovery > 500ns	-	DO-201AD	-55 to 150	Active
1N4002-T	Diodes Incorporated	100	1	1.0 @ 1A	Standard Recovery > 500ns	-	DO-41	-65 to 150	Last Time Buy
1N4002-TP	Micro Commercial Co	100	1	1.1 @ 1A	Standard Recovery > 500ns	2000	DO-41	-55 to 150	Not For New Designs
1N4002G	Taiwan Semiconductor Corporation	100	1	1.0 @ 1A	Standard Recovery > 500ns	-	DO-204AL	-55 to 150	Active
1N4002G-T	Diodes Incorporated	100	1	1.0 @ 1A	Standard Recovery > 500ns	2000	DO-41	-65 to 175	Active
1N4002RLG	onsemi	100	1	1.1 @ 1A	Standard Recovery > 500ns	-	Axial	-65 to 175	Not For New Designs
1N4934-T	Diodes Incorporated	100	1	1.2 @ 1A	Fast Recovery ≤ 500ns	200	DO-41	-65 to 150	Active
1N4934G	Taiwan Semiconductor Corporation	100	1	1.2 @ 1A	Fast Recovery ≤ 500ns	200	DO-204AL	-55 to 150	Active
1N4934G-T	Diodes Incorporated	100	1	1.2 @ 1A	Fast Recovery ≤ 500ns	200	DO-41	-65 to 150	Active
1N4934RLG	onsemi	100	1	1.2 @ 1A	Fast Recovery ≤ 500ns	300	Axial	-65 to 150	Not For New Designs

Engineering Selection Recommendations

Direct Current Replacement (3 A Rating):

The 1N5401G from Good-Ark Semiconductor is the only substitute listed that maintains the full 3 A current rating of the SF5401-TAP. This part is classified as Active product status and carries ROHS3 compliance. The 1N5401G operates in the standard recovery speed category with a DO-201AD package. Selection of this part is appropriate when 3 A current capacity is required and standard recovery characteristics are acceptable for the application.

Reduced Current Substitutes (1 A Rating):

All remaining substitute parts operate at 1 A average rectified current, representing a significant reduction from the SF5401-TAP specification. These parts are suitable only for applications where circuit current requirements do not exceed 1 A. Within this group, parts are further differentiated by recovery speed classification:

Fast Recovery 1 A Substitutes: The 1N4934-T, 1N4934G, 1N4934G-T, and 1N4934RLG maintain fast recovery characteristics (≤ 500 ns) comparable to the SF5401-TAP. Among these, 1N4934-T, 1N4934G, and 1N4934G-T are classified as Active product status. The 1N4934RLG carries Not For New Designs status.

Standard Recovery 1 A Substitutes: The 1N4002-T, 1N4002-TP, 1N4002G, 1N4002G-T, and 1N4002RLG operate with standard recovery characteristics (> 500 ns). The 1N4002G and 1N4002G-T are classified as Active. The 1N4002-T is Last Time Buy, and 1N4002-TP and 1N4002RLG are Not For New Designs.

Compliance and Regulatory Status:

All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the original SF5401-TAP regulatory requirements. Parts designated as Active product status are preferred for new designs. Parts marked Last Time Buy or Not For New Designs should be evaluated for long-term availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the 1N4002 series parts directly replace the SF5401-TAP?

A: The 1N4002 series parts are not direct replacements. While they maintain the same 100 V voltage rating, they are rated for 1 A average rectified current compared to the SF5401-TAP's 3 A rating. These parts are suitable only for applications where circuit current does not exceed 1 A.

Q: What is the difference between fast recovery and standard recovery diodes?

A: The SF5401-TAP is classified as fast recovery with a 50 ns reverse recovery time. Standard recovery substitutes such as the 1N4002 series have reverse recovery times exceeding 500 ns. Fast recovery diodes switch more quickly, reducing switching losses in high-frequency applications. Standard recovery diodes are acceptable in lower-frequency or DC applications where switching speed is not critical.

Q: Are DO-41 and DO-204AL packages interchangeable?

A: DO-41 and DO-204AL are equivalent axial through-hole package designations. Both are suitable for PCB insertion in the same footprint. The different package designations reflect manufacturer conventions but represent the same physical form factor.

Q: Why are some substitute parts marked "Not For New Designs"?

A: Parts designated as Not For New Designs indicate that the manufacturer has discontinued active production or is transitioning to alternative products. While these parts may remain available in current inventory, they are not recommended for new circuit designs due to potential future supply constraints.

Q: What is the significance of the operating temperature range difference?

A: The SF5401-TAP operates from -55°C to 175°C. Some substitute parts have narrower ranges, such as -55°C to 150°C or -65°C to 150°C. The narrower range does not affect compatibility in applications operating within that specified range. Applications requiring operation at the upper temperature limit (175°C) should select substitutes with matching or wider temperature specifications.

Q: Can I use the 1N5401G as a direct replacement for the SF5401-TAP?

A: The 1N5401G maintains the same 100 V voltage rating and 3 A current rating as the SF5401-TAP, making it suitable for direct replacement from a current capacity perspective. However, the 1N5401G is classified as standard recovery (> 500 ns) compared to the SF5401-TAP's fast recovery (50 ns). This difference in recovery speed may affect performance in switching applications. The 1N5401G is appropriate for DC rectification and lower-frequency applications where recovery speed is not critical.

Q: What packaging options are available for 100 V / 3 A rectifier diodes?

A: The SF5401-TAP uses SOD-64 axial packaging. The 1N5401G substitute uses DO-201AD axial packaging. Both are through-hole axial configurations suitable for traditional PCB insertion. The different package designations reflect manufacturer conventions but both accommodate similar board layouts and assembly processes.

Q: Are all listed substitute parts ROHS3 compliant?

A: Yes, all substitute parts listed maintain ROHS3 compliance and REACH unaffected status, matching the regulatory requirements of the SF5401-TAP. This ensures compatibility with environmental and hazardous substance restrictions applicable to the original component.

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